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ppc/pnv: extend XSCOM core support for POWER9 

Provide a new class attribute to define XSCOM operations per CPU
family and add a couple of XSCOM addresses controlling the power
management states of the core on POWER9.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20190307223548.20516-11-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
This commit is contained in:
Cédric Le Goater 2019-03-07 23:35:43 +01:00 committed by David Gibson
parent 6598a70d00
commit 90ef386c74
2 changed files with 89 additions and 13 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

100
hw/ppc/pnv_core.c
View File

@ -60,8 +60,8 @@ static void pnv_cpu_reset(void *opaque)
#define PNV_XSCOM_EX_DTS_RESULT0 0x50000
#define PNV_XSCOM_EX_DTS_RESULT1 0x50001
static uint64_t pnv_core_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
static uint64_t pnv_core_power8_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = 0;
@ -82,16 +82,74 @@ static uint64_t pnv_core_xscom_read(void *opaque, hwaddr addr,
return val;
}
static void pnv_core_xscom_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int width)
static void pnv_core_power8_xscom_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int width)
{
qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
addr);
}
static const MemoryRegionOps pnv_core_xscom_ops = {
.read = pnv_core_xscom_read,
.write = pnv_core_xscom_write,
static const MemoryRegionOps pnv_core_power8_xscom_ops = {
.read = pnv_core_power8_xscom_read,
.write = pnv_core_power8_xscom_write,
.valid.min_access_size = 8,
.valid.max_access_size = 8,
.impl.min_access_size = 8,
.impl.max_access_size = 8,
.endianness = DEVICE_BIG_ENDIAN,
};
/*
* POWER9 core controls
*/
#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP 0xf010d
#define PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR 0xf010a
static uint64_t pnv_core_power9_xscom_read(void *opaque, hwaddr addr,
unsigned int width)
{
uint32_t offset = addr >> 3;
uint64_t val = 0;
/* The result should be 38 C */
switch (offset) {
case PNV_XSCOM_EX_DTS_RESULT0:
val = 0x26f024f023f0000ull;
break;
case PNV_XSCOM_EX_DTS_RESULT1:
val = 0x24f000000000000ull;
break;
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
val = 0x0;
break;
default:
qemu_log_mask(LOG_UNIMP, "Warning: reading reg=0x%" HWADDR_PRIx "\n",
addr);
}
return val;
}
static void pnv_core_power9_xscom_write(void *opaque, hwaddr addr, uint64_t val,
unsigned int width)
{
uint32_t offset = addr >> 3;
switch (offset) {
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_HYP:
case PNV9_XSCOM_EC_PPM_SPECIAL_WKUP_OTR:
break;
default:
qemu_log_mask(LOG_UNIMP, "Warning: writing to reg=0x%" HWADDR_PRIx "\n",
addr);
}
}
static const MemoryRegionOps pnv_core_power9_xscom_ops = {
.read = pnv_core_power9_xscom_read,
.write = pnv_core_power9_xscom_write,
.valid.min_access_size = 8,
.valid.max_access_size = 8,
.impl.min_access_size = 8,
@ -138,6 +196,7 @@ static void pnv_realize_vcpu(PowerPCCPU *cpu, PnvChip *chip, Error **errp)
static void pnv_core_realize(DeviceState *dev, Error **errp)
{
PnvCore *pc = PNV_CORE(OBJECT(dev));
PnvCoreClass *pcc = PNV_CORE_GET_CLASS(pc);
CPUCore *cc = CPU_CORE(OBJECT(dev));
const char *typename = pnv_core_cpu_typename(pc);
Error *local_err = NULL;
@ -180,7 +239,7 @@ static void pnv_core_realize(DeviceState *dev, Error **errp)
}
snprintf(name, sizeof(name), "xscom-core.%d", cc->core_id);
pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), &pnv_core_xscom_ops,
pnv_xscom_region_init(&pc->xscom_regs, OBJECT(dev), pcc->xscom_ops,
pc, name, PNV_XSCOM_EX_SIZE);
return;
@ -222,6 +281,20 @@ static Property pnv_core_properties[] = {
DEFINE_PROP_END_OF_LIST(),
};
static void pnv_core_power8_class_init(ObjectClass *oc, void *data)
{
PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
pcc->xscom_ops = &pnv_core_power8_xscom_ops;
}
static void pnv_core_power9_class_init(ObjectClass *oc, void *data)
{
PnvCoreClass *pcc = PNV_CORE_CLASS(oc);
pcc->xscom_ops = &pnv_core_power9_xscom_ops;
}
static void pnv_core_class_init(ObjectClass *oc, void *data)
{
DeviceClass *dc = DEVICE_CLASS(oc);
@ -231,10 +304,11 @@ static void pnv_core_class_init(ObjectClass *oc, void *data)
dc->props = pnv_core_properties;
}
#define DEFINE_PNV_CORE_TYPE(cpu_model) \
#define DEFINE_PNV_CORE_TYPE(family, cpu_model) \
{ \
.parent = TYPE_PNV_CORE, \
.name = PNV_CORE_TYPE_NAME(cpu_model), \
.class_init = pnv_core_##family##_class_init, \
}
static const TypeInfo pnv_core_infos[] = {
@ -246,10 +320,10 @@ static const TypeInfo pnv_core_infos[] = {
.class_init = pnv_core_class_init,
.abstract = true,
},
DEFINE_PNV_CORE_TYPE("power8e_v2.1"),
DEFINE_PNV_CORE_TYPE("power8_v2.0"),
DEFINE_PNV_CORE_TYPE("power8nvl_v1.0"),
DEFINE_PNV_CORE_TYPE("power9_v2.0"),
DEFINE_PNV_CORE_TYPE(power8, "power8e_v2.1"),
DEFINE_PNV_CORE_TYPE(power8, "power8_v2.0"),
DEFINE_PNV_CORE_TYPE(power8, "power8nvl_v1.0"),
DEFINE_PNV_CORE_TYPE(power9, "power9_v2.0"),
};
DEFINE_TYPES(pnv_core_infos)

2
include/hw/ppc/pnv_core.h
View File

@ -42,6 +42,8 @@ typedef struct PnvCore {
typedef struct PnvCoreClass {
DeviceClass parent_class;
const MemoryRegionOps *xscom_ops;
} PnvCoreClass;
#define PNV_CORE_TYPE_SUFFIX "-" TYPE_PNV_CORE